Also use of inert injection environment can increase the average molecular weight of aged samples of PA66. It is concluded that drying in argon is a convenient, cheap, and effective method to reduce degradation.

• 不同阶段使用氩气的结果显示:在惰性气体下干燥原材料是一个可行、方便而又相对有效的降低塑料老化的方法。